/*
 * Copyright (C) 2009, 2010, B3log Team
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.b3log.nide.service.maven.cmd;

import java.util.Observer;
import org.b3log.latke.service.ServiceException;
import org.json.JSONObject;

/**
 * Command.
 *
 * @author <a href="mailto:DL88250@gmail.com">Liang Ding</a>
 * @version 1.0.0.2, Jun 11, 2010
 */
public interface Command {

    /**
     * Executes this command with the specified argument and ouput listeners.
     *
     * @param argument the specified argument, for example:
     * <pre>
     * {
     *     "projectParentDir": "/home/daniel/nide/projects"
     *     "projectGroupId": "org.b3log",
     *     "projectArtifactId": "l0y0l",
     *     "projectVersion": "1.0.0"
     * }
     * </pre>
     * @param outputListeners the specified output listeners
     * @return execution result, for example:
     * <pre>
     * {
     * TODO:
     * }
     * </pre>
     * @throws ServiceException service exception
     */
    JSONObject execute(final JSONObject argument,
                       final Observer... outputListeners)
            throws ServiceException;
}
